Stereotyping apparatus.



J. IVICNAUGHTO N.

STEREOTYPING APPARATUS.

APPLICATION FILED MAY 5. Is I 5.

1,189,149. Intermed June 27,1916.

lI T" 2 SHEETS-SHEET l. l

MIA I f E A I I .Witnesses l Inventory J. IVICNAUGHTON.

STEREOTYPING APPARATUS.

APPLICATloN Flu-:D MAY 5. i915.

1,1 89,1 49. Patented June 27, 1916.

M 2 SHEETS-SHEET 2.

summum JOHN MCNAUGHTGN, 03F LONDON, ONTARIO, C ANDA. l

Specification of Letters Patent.

STEBEOTYPING 1%.PPARATUS.

mum

Patented .nine 27, 1916.

Ap'pncaatn, mea may serial No. 26,016.

T all whom t may concern:

Be 1t known that I, JOHN MCNAUGHTON,

` a subject of the King of England, residing at London, in the Provinceof Ontario and Dominion of Canada, have invented a new and usefulStereotyping Apparatus, of which the following is a specification.

This invention relates to apparatus for producing stereotype plates, oneof the objects of the invention being to provide a simple form ofapparatus which is especially designed for use by persons conductingprinting establishments on a small scale and who have thus far beenhandicapped yin that it' has only been possible for them to use platesmountedon blocks or backs shipped to them -at considerable expense tothe advertiser, and which, consequently, has resulted in a considerablelloss of business which might otherwise be secured if the stereotypescould be made and set up as readily as is the case in large printingplants such as conducted by newspapers and publishing houses in thelarger cities.

It is Well known to those skilled in the art to which the presentinvention relates that when an advertising campaign is conducted at thepresent time, it is the practice to prepare a matrix or mat of papiermchor other standard material and to forward one to each of a number ofpublishers at comparatively slight cost, the publishers, in turn,preparing therefrom the stereotype plates which are used in printing.Those publishers located in small communities not provided withstereotyping facilities do not profit by suchl an advertising campaign,unless the advertiser is willing to undertake the excessive costinvolved in mailing electrotypes or stereotypes mounted on blocks readyto be placed in the presses.

As before pointed out, one of the objects of the present invention is toprovide-a stereotyping outfit whereby it is possible for a printer orpublisher in any locality to produce stereotypes from a matrix.

A further object is to provide a stereotyping apparatus whereby astereotype plate can be produced without the many objectionable featuresnow present in stereotyping. For example, it is the practice, Whencasting a stereotype plate, to pour the metal from a ladle into thecasting box, and, in order .that the?? may be suflicient weight of metalto insure the proper packing of the molten metal agalnst the matrix, itbhas been necessary to continue pouring-until the level of metal hasrisen a, considerable distance above the top of the mat, this surplusvmetal.'

the riser. Thus a considerable quantity of 1 metal in the form of theriser is left at one end of the casting and is useless until remelted.`l

One of the objects of the present invention is to combine With thecasting b`ox a melting pot the contents of which are adapted to pourdirectly into the box When sai-d box is tilted out of its normalposition, with the result that the Weight of the'molten contents of thebox serves to properly pack the metal against the matrix and, When thebox is restored to its normal position, the molten metal remains in thepot and the stereotype produced will be found with but a small riser andthus the metal in use can be utilized to make more stereotypes thanwould be possible with an equal amount ofmolten metal under the oldprocess.

' Another object is to provide means whereby the molten metal isdirected -into the box in a sheet extending throughout the width of thematrix so that the churning or agitation of the metal while entering thebox is eliminated and, consequently, the formation of spongy. areas orair holes which so often render stereotypes unfit for use at the presenttime, is prevented.

Y Another objection present in stereotyping apparatus as now used isfound in the fact that before utilizing the casting box it has beennecessary to heat the same. This has been done in various Ways, as bypouring molten metal into the box several times.

One of the obj ects of the present invention is to overcome thisobjection by extending the box from the pot in which the metal isreduced to liquid form, so -that heat is conducted from the pot tothebox and said box. maintained in a Warm condition. The old Way of heatingthe box is furthermore obv jectionable 'for the reason that it resultsin making the box of an even heatthrough'out the length thereof. In thepresent case, however, the box is maintained at a higher temperatureclose to the pot than at that end v thereof remote from the pot.Thisresults in the formation of a better stereotype, for the reason thatit is desirable to have the metal cooled first at that end of the boxremote from the pot and then gradually to- Ward the pot.

Another object is to provide apparatus of this character utilizing whatI term a cupped matrix whereby it becomes unnecessary to rout themarginal portion of the stereotype as heretofore.

With the foregoing and other objects in view which. will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention. herein disclosed, can be made within thescope of what is claimed, Without departing from the spirit of theinvention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings: Figure 1 is a vertical longitudinal section throughthe stereotyping apparatus constituting the present invention, thenormal position of the box and pot being shown in full lines and theposi tions. thereof during the casting operation being shown by dottedlines. Fig. 2 is an end elevation of the upper portion of the apparatus,parts being broken away. Fig. 3 is a top plan View, the top plate beingremoved. Fig. 4 is a transverse section through the casting box, saidsection being taken on the line A-B Fig. 1. Fig. 5 is an enlargedsection through a portion of the matrix and showing how the same isproduced in cupped or dished form.

Referring to the figures by characters of reference 1 designates a postupstanding from a base 2 and provided, at its upper end, with a head 3supporting a laterally extending shaft 4, there being an arcuate arm, 5extending from the head and provided Witha stop lug 6 extendinglaterally therefrom near the free end thereof, there being a notch 7above the lug and extending laterally into the arm 5, for the purposehereinafter set forth. The structure described constitutes only' one ofmany forms of support that might be employed' for holding the castingbox and pot constituting the main portion. of the present invention.

Mounted to slide and rotate on the shaft 4 are ears 8 depending from theside portions of the base section 9 of the castingbox, this base sectionbeing provided, at one end, with a pot 10 Ahaving its bottom formed witha fiat normally inclined 'por- .tion 11 extending to the plate 9 and ofa width, at its upper edge, but slightly less than the width of theplate 9. Formed along the sides and outer end of the plate 9 is acontinuous fiat rib or bearing 12 merging into the Hat side faces-13extending laterally from the pot 10. A .transverse groove 14 is formedin the base plate 9 close to the discharge end of the pot 10 and thisgroove intersects the bearings 12'and is designed to receive a clampingstrip 15 which may be hingedly connected to one side of plate 9 as shoWnat 16. The metal plate 9 is comparatively thin, and it has been found,as a result, that by removing a portion of the metal from the bottom ofplate 9 along lines extending transversely of the plate and close to thepot 10, as shown at 17, molten metal when poured into the casting boxwill cool as readily adjacent the center of the plate 9 close to the pot10, as at the sides of the plate.

An ear 18 is extended laterally from one side of the pot 10 and isadapted, when plate 9 is shifted laterally along the shaft 4, to enterthe notch 7 and thus hold the plate against swinging movement. When,however, the said plate is pulled laterally along shaft 4f in theopposite direction, ear 18 will be withdrawn from the notch 7 and thepla-te 9 is thus free to be tilted as shown by dotted lines in Fig. 1. Astop pin 19 may be extended through the shaft i to limit the slidingmovement of the plate 9.

A cover piate 20 is adapted to be used in connection with the plate 9and pot 10 and is provided, along its-sides and one end with continuousribs or bearing members 2. adapted to cooperate with the bearing members 12 to hold the marginal portion of the matrix in position. Plate 20extends any desired distance across the pot 10 and is provided withhandles 22 whereby it can be moved readily into and out of position.This plate may be provided with ears 23 at the sides thereof adapted tobe engaged by bolts 24 pivotally connected to the sides of the plate 9and carrying clamping nuts 25. By providing a means of this type, plate20 can be fastened securely to the plate 9. It will be understood,however, that any other suitable means may be provided for holding theparts together. heater 26 is adapted to be arranged under the pot 10 soas to heat the contents of the Pmi' The apparatus herein describedrequires the use of a matrix of special form, the same being designatedby me as a cupped or dished matrix. This matrix is produced of the usualmaterials and is made by arranging the printing form 27 (see Fig. 5)between bearing members 28 which terminate below the face of the form adistance equal to the height of the bearing members l2. The matrix M isthen pressed down onto the form 27 and bearing members 28 with theresult that it is given a cupped or dished contour with the side and endflanges N, the

Any suitable form of of the matri'x.

impressions (produced by the type form being produce in the inner orconcave Aface In using the apparatus, the type metal is placed in thepot10' and heated so as to be reduced to liquidform. Plate 20 is removedand the strip 15 is shifted, from the groove 14. The matrix which issupplied to" the user of the apparatus is adapted to fit snugly on theplate 9 with its anges NA resting on the bearing members 12. The 11ppermargin of the .matrix is left projecting beyond one. end ofthe body ofthe matrix and is adapted to extendacross the groove 14, after which thestrip 15 is pressed `down against the projectihg portion of the ong 'andwill bind it against the walls of the groove, thus securely fasteningone end of the matrix to the plate 9 so that when the metal is pouredfroni the pot it cannot enter between the matrix and the plate, 9. Asheet of paper is then placed over the matrix and the outlet portion ofthe p ot, this sheet being indicated at Oy in Figs. 1 and 4, after whichthe plate 20 is placed in position and secured by the means providedtherefor, thus to clamp the flanges N and the edges of the sheet Otogether and between the bear- I ings 12 and 21, as shown particularlyin Fig. 4. After the parts have thus been secured the plate 9 and all ofthe parts connected thereto, is shifted laterally along the shaft 4 soas to disengage ear 18,from arm 5. The said plate 9 is then swungdownwardly to the position indicated by dotted lines in Fig. 1. Thiswill result in a portion of the molten metal falling in a broad sheetoif of the inclined portion 11 of the bottom of the box and into thespace between the matrix and the sheet O. By the time the front oradvancedA portion of the sheet .of

molten metal reaches the bottom of the casting box, the entire box willhave been lled with metal a'nd this metalwill be packed properly intothe depressions in the matrix by the weight of the molten metal`contained in the pot 10. Immediately following this operation thestructure is swung back to its initial or horizontal position, thatportion of the metal taking the place of the ordinary cool at said coolend; Thus there will be no danger of the casting cooling first at theinletend of the box,'rather than at the other end and the consequentundesirable crystallization of the metal forming the plate. As

'l before pointed out, a portion of the metal is removed from under theplate 9 as at 17, with the result that instead of the metal graduallycooling along deeplycurved lines, 1t will be'coled along lines extendingsub- Y stantially straight across thecasting box close to the inletthereof. In other words, without removing the metal at 17, the latewould first cool by the sides of thevbox, eaving a molten mass at thecenter of the box close tothe inlet thereof for a considerableA timeafter the sides have cooled. It has been found in practice that thisvuneven cooling will result in an inferior product.

To remove the plate it is merely necessary l to detach thecover 20,whereupon the plate can be lifted out of the apparatus and it will befound that by utilizin a cu ped or dished matrix such as describe ,thepate will have its edge portions depressed below the printing face sothat no routing will be neces- I sary, as where the marginal portions ofthe plate are type-high. The plate can be trimmed as ordinarily and vitwill be found Vthat but va very narrow riser is formed thereeoA theparts so connected that when the metal is poured from the pot 10 it willgravitate into the casting box. n

Obviously by providing apparatus such as described, any person, eventhough unskilled in the art o f stereotyping, can produce high classstereotypes when supplied with a maf trix Iittedt the apparatus. Thus itispossible for publishers who have .heretofore been unable" to utilize amatrix because not provided with stereotyping facilities, to produce anduse stereotypes as cheaply as the largest publishers.

What is claimed is 1. Stereotyping apparatus including a plate having amatrix receiving recess, means cooperating with the plate for engagingthe marginal portion of a cupped matrixseated in the recess, and ameltlng pot at one lend of the plate and movable therewith, said platebeing tiltably mounted. 1'

2. Stereotyping apparatus includin a -plate having upstanding bearingmem ers forming a matrix receiving recess therebetween, means coperatingwith said bearing members for engaging the mar inal portion of a cuppedmatrix'seated in' he recess', and a melting pot at one end of the plateand movable therewith, said plate being tiltably mounted.

3. stereotyping apparatus 'including a plate having a matrixreceiving-recess and provided with upstanding bearing portions, meansfor clamping the marginal portion of a cupped matrix upon saidupstanding portions, a pot for directing a sheet of molten metal ontothe held matrix, and means for tiltably supporting the plate and pot.

4. Stereotyping apparatus including a tiltably mounted plate having amatrix receiving recess and upstanding bearing portions extendincontinuously along the sidesO and one end o the plate, means coperatingwith said bearing portions for holding the marginal portions of acupped. matrix, and a melting pot at the other end of the plate fordirecting onto the matrix a sheet of molten metal of a widthsubstantially equal to the width of the printing face of the plate to beproduced.

5. The combination with a movably supported plate having a matrixreceiving recess, there being marginal upstanding bearing portionsextending continuously alo-ng three sides of the plate, of a cuppedmatrix removably mounted in the recess and having the printingimpressions in the concave face thereof, there being marginal flangesupon the matrix and engaging said bearing portions, means for clampingsaid flanges upon the bearing portions, and a meltingpot movable withthe plate for directing molten metal onto the concave face of thematrix.

\ 6. Stereotyping apparatus including a plate tiltably and slidablymounted, said plate having upstanding bearing portions extendingcontinuously along three sides and forming a matrix receiving recesstherebetween, a melting pot carried by the plate and constituting meansfor directing molten fluid onto the plate from the remaining sidethereof, means detachably connected to the plate for binding themarginal portion of a matrix onto said bearing portion, a holdingelement fixedly mounted, and means movable with the potl during thesliding move ment of the plate in one direction, for engaging saidholding means to fasten the plate against tilting movement.

7. Stereotyping apparatus including a support, a shaft extendingtherefrom, a plate tiltably and slidably mounted on the shaft, a meltingpot at one end of the plate, means coperating with the plate forengaging and holding a cupped matrix in position to receive molten metalfrom the pot whenthe plate is tilted, a holding means, and meanscooperating with said holding means to secure the plate and pot againsttilting movement when said upon the shaft.

8. In stereotyping apparatus, the combination with a tiltable plate anda melting pot at one end of the plate and movable therewith, of a cuppedmatrix supported by the' plate, a cover plate for engaging the plate isslid in one direction marginal portion of the matrix to secure saidmatrix in position, said cover plate extending over the pot.

9. Stereotyping apparatus including a casting box tiltably mounted, amelting pot at one end of the box for directing into the box a sheet ofmetal substantially equal in width to the width of the interior of thebox, the bottom of the box being thinned toward the center thereofadjacent the pot.

In testimony that I claim the foregoing as my own, I have hereto ailixedmy signature.

JOHN MGNAUGH'ION.

